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4. & Toronto, especially pp.41 -43.5Thomas Butler to Francis Darwin, 13 Sept. 1882, Darwin Papers, Cambridge University Library,
5. DAR 112. Iamindebted to Miss Nancy Mautner for bringing this letter to my notice.6Now in the possession of the Linnean Society of London.7KIRBY, M., 1850. A flora ofLeicestershire, Hamilton, Adams & Co., London, p.x. HORWOOD,